The hex color #3d38c4 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#C2C73B. The grayscale version is
#686868. A 20% lighter version of the original color is
#706BF7, and Hex
#0A0591 is the 20% darker color. If the color is saturated by 10%, you get
#3933CD. If the color is desaturated by 10%, the color
#413DBB is obtained.